Shoring structure for concrete forms



Ot. 13, 1970 w JENNINGS 3,533,592

I SHORING STRUCTURE FOR CONCRETE FORMS Filed May 5, 1967 3 Sheets-Sheet 1 IN VE/YTOA. W/L 4 MM 4. JENNINGS Oct. 13, 1970 w. A. JENNINGS SHORING STRUCTURE FOR CONCRETE FORMS 3 Sheets-Sheet '2 Filed May 3, 1967 v //v vs/vrap. W/L 4 MMA Jaw/ms BY KM ATTOP/VEX Oct. 13, 1970 w. A. JENNINGS 3,533,592

SHORING STRUCTURE FOR CONCRETE FORMS 7 Filed May 5. 1967 3 Sheets-Sheet 5 v //v MFA/70A. W/L 4 04/ 14. JfA/N/IYGJ United States Patent "ice SHORING STRUCTURE FOR CONCRETE FORMS William A. Jennings, Des Moines, Iowa, assignor to Economy Forms Corporation, Des Moines, Iowa, a

corporation of Iowa Filed May 3, 1967, Ser. No. 635,806 Int. Cl. E04g 11/48 US. Cl. 249-18 1 Claim ABSTRACT OF THE DISCLOSURE The shoring structure includes four upright corner posts capable of being provided with attachable shore brackets that are connectable to the posts for extension laterally outwardly therefrom. Metal concrete forms are extended between and releasably connected to the posts and to the brackets to form a continuous horizontal supporting area, with the area portion overlying the brackets being in an overhanging relation relative to the normal area portion defined by the four corner posts. The normal area portion of the shore structure may thus be readily increased to provide a supporting area for cantilever floor structures such as outside balcony areas, or extended ledge Work and the like where vertical support for the overhanging concrete supporting area is not readily available.

SUMMARY OF THE INVENTION The shoring structure of this invention is of a knockdown construction capable of being quickly assembled on the job without the use of any special tools. Shore bracket attachments are connectable with a shore structure to provide when necessary an overhanging supporting area which constitutes a continuous horizontal extension of the normal supporting area of the shoring structure. The normal supporting area of the shoring structure is thus capable of being expanded without any corresponding increase in the frame size of the shoring structure.

DETAILED DESCRIPTION OF THE INVENTION 'Further objects and features of the invention will become apparent from the following description when taken in connection with accompanying drawings in which:

FIG. 1 is a perspective view of a shoring structure with shore bracket attachments in assembly relation therewith;

'FIG. 2 is an enlarged fragmentary perspective view of the upper portion of a corner post which forms a part of the shoring structure shown in FIG. 1, with parts broken away for the purpose of clarity;

FIG. 3 is an enlarged sectional detail view taken along the lines 3-3 in FIG. 2;

FIG. 4 is an enlarged perspective view of a shore bracket attachment shown in FIG. 1;

FIG. 5 is an enlarged foreshortened perspective view of a shore bracket shown in assembly with a corner post of the shoring structure illustrated in FIG. 1, with some parts being broken away and other parts shown in section to more clearly show such assembly; and

FIG. 6 is an enlarged detailed perspective view of a locking unit that is shown generally in FIG. 5.

With reference to FIG. 1 of the drawing, there is illustrated a shoring structure 10 for supporting a form assembly 11 that is comprised of a pair of transversely spaced longitudinally extended truss forms 12 and intermediate metal forms 13. The shoring structure 10 includes a knockdown frame unit 14 which has four upright corner posts 16 connected together by means including upper and lower connecting frames 17 and 18, respectively, of a like construction and releasably connected in a like manner with the posts 16.

3,533,592 Patented Oct. 13, 1970 A side or longitudinal form 12 (FIG. 2) is of an inverted channel shape in transverse cross section so as to have a top flat surface 21 with depending side flanges 22. A post 16 has a flat top surface 19. Each intermediate form 13 includes a base or flat plate member 23 of a rectangular shape (FIG. '1) having depending side and end flanges 24 and 26, respectively. The forms 13 are of a length equal to the transverse space between the longitudinally extended forms 12 to which they are releasably connected such that the top surface 23 of the forms 13 are in the horizontal plane of the top surfaces 21 of the side forms 12 to provide a flat continuous supporting surface for concrete or the like.

Each form 12 (FIGS. 1 and 2) constitutes a beam that is formed as part of a truss assembly 29 which is movably supported for up and down movement between corresponding longitudinally spaced posts 16 by means including mounting units 31. Each mounting unit 31 is adjustably supported on a corresponding post 16 for vertical movement between an upper position, wherein the top surfaces of the forms 12 and 13 are located in the plane of the top surfaces 19 of the posts 16, and a lower position wherein the top surfaces of the forms 12 and 13 are in a common horizontal plane located below the horizontal plane of the top surfaces of the posts 1 6.

As shown in FIG. 3 a pair of mounting units 31 are associated with each corner post 16, with the upper position of a mounting unit 31 being maintained by inserting a pin 32 of a locking unit 33 carried on a post 16 within an opening 34 formed in a latch member 36 carried on a mounting unit 31.

As previously noted, the upper and lower connecting frames 17 and 18, respectively, are of a like construction and similarly assembled with a corner post 16. Only the upper connecting frame, therefore, will be described.

Each corner post 16 (FIGS. 1 and 5) at a position below a corresponding mounting unit 31 carries a laterally extended flange member 38 with each side of a flange 38 being provided with a series of three linearly spaced vertical holes 39. Oppositely arranged pairs of frame members 41 are provided at each of their ends with a pair of downwardly projected connecting pins 42 adapted to be received within corresponding outside holes 39 in a side of the flange 38, as best illustrated in FIG. 5. The other pair of opposite frame members 43 have each end thereof provided with a single connecting pin 44 for reception within a central one of the openings 39 in a side of the flange 38, as is also shown in FIG. 5.

Referring to FIG. 1 it is seen that each upright post 16 has a lower flange 38 that is adapted for assembly with the lower connecting frame 18. For a more detailed description of the knockdown frame unit 14, truss assemblies 29, mounting units 31 and connecting frames 17 and 18, reference is made to the co-pending application of William A. Jennings, Ser. No. 483,587, filed Aug. 30, 1965, now issued Pat. No. 3,409,266.

A shore bracket 46 (FIGS. 1 and 4) is of an angulate shape and comprised of a horizontal supporting member 48 and a leg member 49 secured to the outer end 51 of the supporting member. From such outer end, the leg member 49 extends at an angle of about sixty degrees inwardly and downwardly in the plane of the supporting member 48 to a position wherein its lower end 52 is in vertical linear alignment with the inner end 53 of this support member 48. 7

As best appears in FIG. 5 the support member 48 is formed of a pair of interconnected transversely spaced parallel channel beams 55 arranged in a back to back relation. In like manner the leg member 49 is formed 0 of a pair of interconnected parallel channel beam memspacing between the channel members 55. An upright brace member 56 is extended between and connected to the support member 48 and the leg member 49.

Positioned between and secured to the channel members 55 and 54 and at the outer end 51. of the support member 48 is an upright stub post 57 (FIGS. 4 and 5) of a size and shape corresponding to the corner posts 16 of the frame unit 14 (FIG. 1). A mounting unit 31 (FIG. 4) is assembled with the stub post 57 in all respects similar to the assembly of a mounting unit 31 with a corner post 16. It is to be also noted that each stub post 57, at a position below a corresponding mounting unit 31, is provided with a flange 38.

As shown in FIG. 4 the inner end 51 of the support member 48 is provided With a pair of transversely Spaced depending connecting pins 61 which are in vertical alignment with a corresponding pair of connecting pins 62 secured to and depending from the lower end of the leg member 49. The transverse spacing of the connecting pins 61 and 62 corresponds to the space between the outer holes 39 in the side of a flange 38; and the vertical distance between the lower edge of the leg member 49 and the lower edge of the support member 48 is equal to the vertical distance between the top surfaces of the upper and lower flanges 38 that are carried on a corner post 16.

In the assembly of a shore bracket 46 with the shoring structure 10, a pair of the brackets are mounted on a pair of corresponding corner posts 16 to provide for the extension of the support members 48 laterally outwardly from one side of the frame 14. This mounting is accomplished by merely dropping the connecting pins 61 and 62 within corresponding pairs of outer holes 39 in corresponding outer sides of the upper and lower flanges 38 on the selected pair of corner posts 16. A locking unit 66 secured to the under side of the inner end of the support unember 48 includes an inclined locking pin 67 is frictionally engageable with the under side of an associated flange 38, in the manner shown in FIG. 6, so as to positively lock the pins 61 and 62 against upward movement out of the holes 39 in the flanges 38.

The pair of shore brackets 46 are connected together at the flanges 38 on the stub posts 57 thereof by a brace member 41 (FIG. 5) similar in all respects to the frame members 41 of a connecting frame 17 or 18. A truss assembly 29 (FIG. 1) is then extended between the stub posts 57 and connected to the mounting units 31 thereof, after which metal forms 13 are extended between and connected to the truss assembly 29 on the shore brackets and the nextadjacent truss assembly 29 on the shoring structure 10.

With all of the truss assemblies 29 supported on their corresponding mounting units 31 the composite form as sembly comprised of the truss forms 12 and intermediate forms 13 is movable as a unit into and out of the plane of the top surfaces 19 of the corner posts 16 and stub posts 57.

Importantly, it is to be noted that the additional supporting area provided by the shore brackets 46 constitutes an extension relative to the normal supporting area provided by the shore structure as defined by the four corner posts 16. This additional supporting area is thus positively carried in an overhanging relation relative to the frame 14 to provide for the laying of concrete over a supporting area that is continuous with, but outside of the supporting area defined by the four corner posts 16 of the frame 14.

It is to be understood that a pair of the shore brackets 46 may be connected to any corresponding pair of corner posts 16, so that the shoring structure 10 may have the supporting area thereof concurrently extended from any number of the sides thereof.

Although the invention has been described with respect to a preferred embodiment thereof, it is to be understood that it is not to be so limited since changes and modifications can be made therein which are within the full intended scope of this invention as defined by the appended claims.

I claim:

1. In a shoring structure for metal concrete forms, including:

(a) a frame assembly including a plurality of upright corner posts,

(b) a pair of truss assemblies having horizontal top surfaces lying in a common plane,

(c) means connecting each truss assembly to and extended between a pair of oppositely arranged corner posts so that the pair of truss assemblies are in a parallel relation,

(d) a first plurality of form members extended between and releasably connected to said truss assemblies having horizontal top surfaces in said common plane, whereby said form members and truss assemblies form a unit assembly having a continuous concrete supporting surface,

(6) a pair of shore brackets corresponding to a pair of said corner posts located at one side of said frame assembly,

(f) each of said brackets including an elongated horizontal support member,

(g) coacting means on said corresponding pairs of posts and shore brackets for connecting said shore brackets to said posts with said support members extended outwardly from said one side of the frame assembly,

(h) said coacting means including at least a pair of vertically spaced horizontal flange means secured to each of said pair of posts and having upright holes therein,

(i) each of said shore brackets being provided with a pair of vertically spaced upright pin means corresponding to said flange means, and insertable within the holes thereof,

(j) means for locking at least one of said pin means against upward movement relative to a corresponding flange means,

(k) a third truss assembly extended between said support members,

(1) means mounting said third truss assembly on said support members adjacent the outer ends thereof with the top surface thereof in said common plane, and

(m) a second plurality of form members extended between and releasably connected to said third truss assembly and unit assembly having horizontal top surfaces in said common plane.

References Cited UNITED STATES PATENTS 867,274 10/1907 Humphries 182130 X 3,082,843 3/1963 Leonard 182-130 X 3,409,266 11/1968 Jennings 249--18 3,130,470 4/1964 Bowden et al. 24928 X 3,239,188 3/1966 Gostling 24918 X J. SPENCER OVERHOLSER, Primary Examiner U.S. Cl. X.R. 

